Improvement in the manufacture of axle-boxes



D. DALZELL. MANUFACTURE OF AXLE-BOXES. 195,805.

Patented 0ct.2, 1877.

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NFETERS. PHOTO-LITHOGRAPHER. WASHINGTON. D C

UNITED STATES PATENT QFFICE.

,DAVID DALZELL, OF SOUTH EGREMONT, MASSACHUSETTS.

IMPROVEMENT IN THE MANUFACTURE OF AXLE-BOXES.

Specification forming part of Letters Patent No. 195,805, dated October2, 1877; application filed January 17, 1877.

To all whom it may concern:

Be it known that I, DAVID DALZELL, of

South Egremont, in the county of Berkshire and State of Massachusetts,have invented a new and valuable Improvement in Method of ManufacturingAxle-Boxes; and I do hereby declare that the following is a full, clear,and exact description of the construction and operation of the same,reference being had to the annexed drawings, making a part of thisspecification, and to the letters and figures of reference markedthereon.

The drawing is a representation of a side elevation of my invention.

This invention has relation to axle-boxes; and its object is to producea wrought-iron case-hardened box, of whatever form, without any welds,thereby forming a box that will be more durable 'andless liable to breakor separate.

My invention therefore consists in forming the entire box out of a solidpiece of suitable metal by swaging, and then boring a hole throughlengthwise,, and afterward case-hardenmg.

My improved axle-box, as shown atAin the drawing, 1 make in thefollowing .manner: A solid piece of suitable metal is first taken andswaged into form in swages under a trip or other suitable hammer, andmay, if desired, be pressed endwise into a suitable former, to make itthe proper size in diameter, length, and finish. A hole is then boredthrough length- Wise, and reamed out with suitable reamers to bring thebox to the size and shape required, and then, by the process of grindingand polishing, bring it to a perfect state, after which it iscase-hardened.

A box constructed according to my invention, as above described, isadapted to run a vehicle in a most perfect manner, and for an indefiniteperiod, there being no welds, as the entire box is made from a solidpiece of metal, thereby removing all possibility of the box becomingbroken at the point of welding.

The box thus constructed may be made with or without ears, as founddesirable; and I do not wish to be understood as confining the processof manufacture to any particular form of box.

Having now fully described my invention, what I claim as new, and desireto secure by Letters Patent, is

As an improvement in the art of manufacturing axle-boxes, making thesame of a solid piece of Wrought-iron by boring, reaming, andcase-hardening the same, substantially as described.

In testimony that I claimthe above I have hereunto subscribed my name inthe presence of two witnesses.

DAVID DALZELL.

Witnesses:

JUsTIN DEWEY, GEORGE K. HoLMEs.

